21276323417 has 8 divisors (see below), whose sum is σ = 22077760320. Its totient is φ = 20488824720.

The previous prime is 21276323413. The next prime is 21276323437. The reversal of 21276323417 is 71432367212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21276323417 - 2² = 21276323413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21276323413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3481442 + ... + 3487547.

It is an arithmetic number, because the mean of its divisors is an integer number (2759720040).

Almost surely, 2^21276323417 is an apocalyptic number.

It is an amenable number.

21276323417 is a deficient number, since it is larger than the sum of its proper divisors (801436903).

21276323417 is an equidigital number, since it uses as much as digits as its factorization.

21276323417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969103.

The product of its digits is 84672, while the sum is 38.

The spelling of 21276323417 in words is "twenty-one billion, two hundred seventy-six million, three hundred twenty-three thousand, four hundred seventeen".